What was found
FUEL FILTER BYPASS R CAS ILLUMINATED - AMBER CAS MESSAGE "FUEL FILTER BYPASS R" POSTED IMMEDIATELY AFTER T/O. 220 GALLONS OF FUEL JUST LOADED. AFTER LANDING NOTICED A PETROLEUM ODOR IN BOTH HELL HOLE AND BAGGAGE COMPARTMENT. CORRECTIVE ACTION: RESOLUTION: POWERED AIRCRAFT AND DIDN'T HAVE A RIGHT FUEL BYPASS LIGHT ON. OPEN COWLING AND IT LOOKS LIKE OIL WAS PREVIOUSLY SERVICE AND SOMEONE MAY HAVE SPELLED SOME OIL WHICH DRIPPED DOWN THE OIL SERVICE TUBE AND RIGHT ON TOP OF THE BYPASS FUEL SWITCH. FOUND THE CONNECTOR SATURATED WITH ENGINE OIL. CLEANED CONNECTOR OF ENGINE OIL. REMOVED FUEL FILTER AND IT APPEARS TO BE IN GOOD SHAPE AND NOT DIRTY AT ALL. TROUBLESHOT SYSTEM AND FOUND FUEL FILTER BYPASS SWITCH FAULTY. REMOVED FUEL FILTER. P/N:30B6653-01. INSTALLED NEW FUEL FILTER IAW MM 73-10-03.